Gas-furnace



(No Model.)

E. P. REICHHELM.

GAS PURNAGB.

No. 405,051. Patented June 11, 1889.

WIT/VESSES gf/M Kway By Arm/mdf N, persas. mwuuwgnpm. wnahingqm n c.

UNITED STATES PATENT OFFICE.

EDWARD P. REIcHI-IELM, `oE JERSEY CITY, NEw JERSEY.

GAs-FURNACE.

SPECIFICATION forming part of Letters Patent No. 405,051, dated June 11,1889.

Application filed December 8, 1888. Serial No. 292,975. (No model.)

To @ZZ whom t may concern:

Be it known that I, EDWARD P. REICHHELM,

a citizen of the United States, residing in Jersey City, county ofHudson, and State of New Jersey, have invented certain new and usefulImprovements in Gas-Furnaces, of which the following is aspecification.

This invention relates to an improved burner for gas-heatedmetallurgical furnaces, so that a high degree of heat, as required formelting, plating, annealing, &c.,is obtained in a quick and effectivemanner by supplying a mixture of gas and air pressure to the same.

In the accompanying drawings, Figure l represents a vertical centralsection of a Inetallurgical furnace with my improved burner for heatingthe same. Fig. 2 is a horizontal section of the furnace on line @c Fig.l, drawn on a larger scale and withV parts broken out. Figs. 3 and 4 arevertical transverse sections through the burner on lines a," oc and y y,Fig. 2, respectively. Fig. 5 is a vertical section on line z ,2, Fig. 2,showing the injector for supplying the gas-and-air mixture to theburner.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A represents the combustion-chamber of agas-heated furnace for melting, blowing, annealing, and othermetallurgical purposes.

The combustion-chamber A is made of any approved construction, asrequired for the purpose for which it is to be used. In thecombustion-chamber is arranged the crucible B, in which the Inetal is tobe melted, or any other support upon or in which the metals to betreated are placed; Below the apertured bottom A ofthecombustion-chamber (shown in Fig. 1) is supported a second crucible B',into which the molten metal is discharged in case the crucible in theinside of the furnace should crack or break.

The furnace is heated by a mixture of gas and air injected underpressure by means of a burner which is formed of a ring-shapeddistributingchamber C, that encircles the combustion chamber A, t-hedistributingchamber being made of two sections C C2, which are screwedtogether, the lower section C2 being cast or otherwise provided withinwardly-inclined burner-tubes d d, which pass at a suitable anglethrough the refractory wall of the furnace to the interior of the same,as shown in Fig. 2. The supply of air is furnished by a blower orair-compressonwhich injects the air through a nozzle E into amixing-chamber E, into which the gas-supply pipe F terminates. Thepartial vacuum formed by the discharge of the air from the nozzle Edraws the gas into the chamber E and from the same into the annulardistributingchamber C, discharging the gas-and-air mixture through theburner-tubes d into the chamber A. The angle of inclination of theburner-tubes to the distributing-chamber C is such that the flamesimpinge tangentially to the crucible, and produce thereby a continuouslapping contact with the same. If three burner-tubes are arranged, acontinuous lapping around of the llames and reverberating of the same isobtained, whereby not only a higher degree of heat is obtained in thechamber A, but the flames act with less deteriorating action on thecrucible than if the flames were impinged at right angles on the same.When the proportion between the size of the combustion-chamber, thedischarge-opening of v the burner-tubes, the injector, and the pressureof the air is established, a very effective gas-heating furnace formetallurgical purposes is obtained, in which a high temperature can beproduced in a quick and effective manner, and all metallurgicaloperations be performed at great convenience and with a considerableeconomy in fuel'.

When my improved furnace is applied to muffle-furnaces-such as are usedfor assaying, enameling, cupelling, and annealing metals-the tangentialburner prevents the penetrating of the products of combustion through`the pores of the mutlie, which takes place when the names strike themuiiie either directly or are in contact with it, and the burner-tubes,owing to their downward inclination, tend to throw the circuit of flamedownward, so as to envelop the lower part of the muffle. Having thusdescribed my invention, I claim as new and desire to secure by LettersPatent? l. The combination of a combustion-chamber and a ring-shapeddistributing-chamber,

rsaid ring-shaped distributing-chamber being IOO constructed in twocircular sections, one section of which is provided with burner-tubesextending inwardly through the walls of the combustionchamber.

5 2. The combination of a combustion-chaluber, an annulardistributing-chamber Surrounding` the combustion-chamber, an d a nu1nber of burner-tubes extending inward from the distribming-chamberthrough the Walls 1o of the combustion-cliamber, said burn cr-tubesbeing disposed tangentially to a circle within the coinbustion-chauiberand inclined downward from the distribut-i11g-chamber.

In testimony that I claim the foregoing as my invention I have Signed mynaine in pres ence of lmvo subscribingI witnesses.

EDVARI) P. REIGHIIELM.

XVitnesses:

PAUL GOEPEL, CARL KARP.

